304980domain: NAppears in sequencesPartial sums of A050405.at n=12A052206Period (multiplicative order base 10) of the terms in A116074 and A116075.at n=20A116076Averages of twin prime pairs of A074378.at n=30A154563a(n) = floor((n + 1/2)^4).at n=23A219086